US828698A - Pulley-frame. - Google Patents

Description

FIGM

PTENTED UG. 14 1906. L. ZAMBONI., PULLEY FRAME.

APPLICATION FILED JULY 1a. 1904.

NOL828,698.

WITNESSES: 6 /f /XM 7 LAWRENCE ZAMBONI, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T THE. AMERICAN PULLEY COMPANY,

OF PHrLADELPHIA, PENNSYL- VANIA, A CORPORATION OF PENNSYLVANIA.

' PuLLEY-FRAME.

Specification of Letters Patent.

Patented Aug'. 14, 11906v Application filed July 18,1904. Serial No. 217.090.

To all whom it may concern:

Be it known that I, LAWRENCE ZAMBONI, of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Im- -rovements in Pulley-Frames, whereof the ollowing is a specification, reference being had to the accompanying drawin s.

My invention relates particularIyto frames for window-sash pulleys; and it is the object 1 o of my invention vto provide a frame of pressed sheet `metal which can be manufactured at less cost than the cast-metal frames heretofore employed.

As hereinafter described, my invention in- 1 5 cludes a frame comprising a face-plate which is adapted to be set in the window-j amb and to which is rigidly secured a pressed sheetmetal casing inclosing a pulley and supporting a shaft upon which the ulley rotates. 2o Said casing may be formed o a single piece of sheet metal drawn by pressing operations so as to comprise a rearwardly-extending perimeter curved in substantially concentric relation with the pulley and forming a dustproof cover for the same, said perimetric ortion of the 'casin being integral with bot of the sides thereo and the ends of the casing being provided with lugsin engagement with rivets by which the casing is secured to the face-plate. Said perimetric portion of the casing comprises a recess ofv limited area through which the cord extends4 from the pulley, and said recess is provided with a rounded marginal flange to avoid abrasion of the cord.

My invention comprises the various novel features of construction and arrangement hereinafter more definitely specified.

In the drawings, Figure I is a side eleva- 4o tion of a frame conveniently embodying my invention. Fig. II is a rear elevation of said frame. Fig. III is a sectional view taken on the line III III inFig. I.

In said figures, 1 is the face-plate, throu h which the pulley 2 projects, adjoining tie sash whose cord is to extend over said pulley. Said pulley is mounted to rotate on the shaft 4, which extends through and is provided with rivet-heads outside of the casin 6, 5o which is pressed from a single piece of's eet metal inclosing said pulley and provided with a recess 8p, through which the cord depends from the pulley within the windowbox. It may be noted that the rearwardlyextending perimeter of said casing 6 is curved in substantially concentric relation with said pulley 2 and forms a dust-proof cover for the up er portion thereof. Said casing is provi ed with lugs 9 and 10 to receive the rivets 12 and 13, which support the casing in rigid relation to the face-plate 1.

It may be noted that, as indicated in Fi I, the recess 8 in the casing is provided wit the rounded marginal flange 15, so that the sash-cord will not be abraded if swung into contact therewith by the vibration of the sash-weight.

Referring articularly to Fig. I, it may be noted that tfie shaft 4 is disposed eccentrically in relation to the height of the pulleycasing to afford a larger space above than below the pulley 2, for the reason that the cord extends over the pulley and the desired room for the same is thus secured within the minimum amountof metal.

Although Ihave shown the casing secured to the face-plate 1 by rivets 12 and 13, it is to be, understood that other means of connecting said members may be employed.

I do not desire to limit myself to the precise details ofconstruction and arrangement herein specified, as various modifications may be made therein without departing from the essential features of my invention.

I claim- 1. In a pulley-frame, the combination with a pressed sheet-metal face-plate of a pressed sheet-metal casing having a rearwardly-extending perimeter curved in substantially concentric relation with the pulley, saidperimetric portion of the casing being drawn integral with both of the sides thereof; means distinct from said face-plate and casing connecting them in ri id relation; a shaft in said casing; and a pu ley mounted to rotate in said casing on said shaft, substantially as set forth.

2. In a pulley-frame, the combination with a pressed sheet-metal face-plate, of a pressed sheet-metal casin formed of a single piece distinct from sai face-plate, having a rearwardly-extending perimeter curved in substantially concentric relation with the pulley, said perimetric portion of the casing being drawn integral with both of the sides thereof; flanges integral -with and part of the vlo@ casing extending from said casing at opposite ends thereof in parallel relation with said face-plate; means local to said anges connecting said face-plate and casing in rigid relation; a shaft in said casing; and a pulley mounted to rotate in said casing-on said shaft, substantially as set forth.

3. In a pulley-frame, the combination with a pressed sheet-metal face-plate, of a pressed sheet-metal casing formed of a single piece distinct from said face-plate, having a rear- Wardly-extendingperimeter curved in substantially concentric relation With the pulley, said perimetric portion of the casing being drawn integral With both of the sides thereof; said perimetric portion of the casing oomprising a recess through which the cord eX- tends and a rounded mar inal flange on 'said recess; flanges integral With and part of the casing extending from said casing at the opposite ends thereof in parallel relation With said face-plate; means local to said anges connecting said face-plate and casing in rigid relation; a shaft in said easing; and a pulley mounted to rotate in said casing on said shaft, substantially as set forth.

In testimony whereof I have hereunto signed my name, at Philadelphia, Pennsylvania, this 14th dag.' of July, 1904.

LAWRENCE ZAMBON I.

Witnesses:

JOSEPH ENrWIsLE, CHARLES E. BI'RNLEY.

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